Haeey c



(No M60181.

H. 0. MONTGOMERY.

PUMP.

No. 334,795. Paten ted Jan. 2 1886.

UNITED STATES PATENT OFFICE.

HARRY O. MONTGOMERY, OF CLEVELAND, OHIO.

PUMP.

FQPECIE'ICATION forming part of Letters Patent No. 334,795, dated January 26, 1886.

I Application filed June 30, 1885. Serial No. 170.229. (No model.)

To all whom it may concern.-

Be it known that I, HARRY C. MONTGOMERY, a citizen of the United States, residing at Cleveland, county of Ouyahoga, and State of Ohio, have invented certain new and useful Improvements in Air-Pumps; and I do hereby declare the following to be a description of the same, and of the manner of constructing and using the invention, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it appertains to construct and use the same, reference being had to the accompanying drawings, forming a part ofthe specification, the principle of the invention being herein explained, and the best mode in which I have contemplated applying that principle so as to distinguish it from other inventions.

My invention is an improvement in airpumps, as set forth in the following description, drawings, and claims.

In the drawings, Figure l is a side elevation showing the invention in use with a beer faucet, a portion of the pump-cylinder being cut away. Fig. 2 is adetail view showing the cleft ring in rear perspective. Fig. 3 is a detail view representing the plunger, the cleft ring, and the packing in diametrical section.

A is the barrel of the pump,with detachable heads B B. Head B is centrally perforated to allow of the passage of the piston-rod 0. Head 13 has the valvular inlet-tube a and the valvular discharge-tube a D is theiplunger, pivotally attached to the pistonrod O.

E is a metallic ring obliquely cleft and elastic, so that it is capable of contraction and expansion peripherally, and is also provided with the interior peripheral flange, e.

Fisa cross-bar designed to lie diametrically across said ring, and has its end portions bearing upon said flange and'fiush with the outer peripheral edge of said ring. Said bar has the screwf cast rigid with it, or otherwise, if

preferred, adapted to work in matrix b in head B.

G is packing located over the inner face of the plunger, between it and said ring, and depending over the outer sides of said ring to bear between them and walls of the barrel A.

The two heads B B are held to each other and to the ends of the barrel by the rods H, provided with nuts h on their screw ends.

My invention as thus described and shown is, as will be seen, very simple and inexpensive in its construction, and also effective, inasmuch as the cleft elastic ring continues, by virtue of its elasticity, to bind the packing tightly against the walls of the barrel as the packing wears away.

Of course the mode of insertingthe plunger in the barrel and the application of the ring and bar upon it are so manifest as to need no explicitdescription ofit. The oblique throughcleft of the ring provides for its continuous circular bearing against the packing; also, the disconnection of the ends of the divided ring gives an operative movement of the ring independent of any adjusting mechanism.

\Nhat therefore I claim is- 1. The combination, with plunger D, packing G, screwf, and bar F, of ring E, divided by the oblique cleft e. and provided with the interior peripheral flange e",'substantially as set forth.

2. Ihe combination, with plunger D, provided with ring E, having flange 6, located on the inner periphery of said ring, of cross-bar F, bearing on said flange, and screwf,rigidly connecting said bar with the plunger, substantially as set forth.

In testimony that I claim the foregoing to be my invention I have hereunto set my hand this 23d day of June, A. D. 1885.

HARRY C. MONTGOMERY.

\Vitnesses:

Trros. B. HALL, Jno. G. HALL. 

